If 100 treats will feed 15 dogs (each dog is given the same number of treats), how many dogs can be fed with 40 treats?

He weights of 2-pound bags of best dog food are approximately normally distributed with a given mean  and standard deviation  according to the empirical rule, what percentage of the bags will have weights within 3 standard deviations of the mean? 47.5%68%95%99.7%